<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
</head>
<body>
<script>
    var o = {
        'b': 'b',
        'c': 'c',
        'a': 'a',
        '1': '1',
        'a2': 'a2'
    };

//    for (var i in o) {
//        console.log(i);
//    }

    o.forEach(function(a,b,c){
        console.log(a,b,c);
    })
</script>

</body>
</html>